A series of strong Pacific storm systems with a subtropical moisture tap began on December 18 and continued through the end of the month.   The first 10 days of this wet period conditioned the watersheds with flooding of concern beginning on December 28th. Total precipitation amounts for the series of systems ranged from 12 to 20 inches.While flooding was widespread throughout Humboldt, Del Norte, and Mendocino Counties, the major flood damages occurred in the Klamath River basin and the Russian River Basin.  On the Klamath River, two boat ramps were damaged, 15 structures were flooded, and the Klamath River Bridge over HWY 101 sustained 15 million dollars worth of damage.  On the Russian River,  hundreds of homes were flooded, major crop damage occurred, and widespread infrastructure damage occurred.  In Mendocino County, landslide damages are not separated from flood damages.A major impact of this series of systems was heavy rain induced landslides.  Cal Trans reported 25 million dollars worth of damage in Humboldt County alone as a result of road wash outs and mud slides, with additional damages of 17.3 and 3.6 million dollars reported by Cal Trans for Mendocino and Trinity Counties for similar causes.  The Hoopa Indians reported 8.5 million dollars worth of similar damage for roads on their lands, and Humboldt and Del Norte County reported 21.5 million dollars worth of land slide damage to county owned roads.Also associated with this series of systems were a storm surge coastal flooding event and a short lived but destructive wind event.    A wind gust of 64 mph was recorded at the Eureka WFO, and a gust of 97 mph was also reported from a research vessel at dock.  Combined damages from these two events were 4.9 million dollars. Damages from the wind event included downed power lines and trees falling ons structures.  Damages from the coastal flooding event occurred to shore side facilities in Del Norte, Mendocino, and Humboldt Counties.It should be noted that damages estimates are still being refined by all parties contacted for dollar estimates.

Storm Surge/Tide in MENDOCINO COAST, CALIFORNIA
From 31-DEC-05 09:30:00 to 31-DEC-05 12:30:00 (PST)
Property damage: 10K
Reported by: COASTAL OBSERVING STATION

Debris Flow in NORTH COAST INTERIOR, CALIFORNIA
From 28-DEC-05 00:00:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 17.5M
Reported by: DEPT OF HIGHWAYS

Debris Flow in UPPER TRINITY RIVER, CALIFORNIA
From 28-DEC-05 00:00:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 3.6M
Reported by: DEPT OF HIGHWAYS

High Wind in UPPER TRINITY RIVER, CALIFORNIA
From 31-DEC-05 09:30:00 to 31-DEC-05 09:50:00 (PST)
Magnitude: 50 MG
Property damage: 1M
Reported by: EMERGENCY MANAGER

Flood in MENDOCINO COAST, CALIFORNIA
From 29-DEC-05 06:30:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 300K
Reported by: NWS STORM SURVEY

Flood in MENDOCINO INTERIOR, CALIFORNIA
From 29-DEC-05 06:30:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 42.2M
Crop damage: 8M
Reported by: EMERGENCY MANAGER

Flood in REDWOOD COAST, CALIFORNIA
From 29-DEC-05 07:15:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 18.3M
Reported by: EMERGENCY MANAGER

Debris Flow in MENDOCINO COAST, CALIFORNIA
From 28-DEC-05 00:00:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 8.65M
Reported by: DEPT OF HIGHWAYS

Debris Flow in MENDOCINO INTERIOR, CALIFORNIA
From 28-DEC-05 00:00:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 8.65M
Reported by: DEPT OF HIGHWAYS

Debris Flow in REDWOOD COAST, CALIFORNIA
From 28-DEC-05 00:00:00 to 31-DEC-05 23:59:00 (PST)
Property damage: 17.5M
Reported by: DEPT OF HIGHWAYS

Storm Surge/Tide in REDWOOD COAST, CALIFORNIA
From 31-DEC-05 09:30:00 to 31-DEC-05 12:30:00 (PST)
Property damage: 1.7M
Reported by: COASTAL OBSERVING STATION

High Wind in REDWOOD COAST, CALIFORNIA
From 31-DEC-05 09:30:00 to 31-DEC-05 09:50:00 (PST)
Magnitude: 64 MG
Property damage: 2.2M
Reported by: UTILITY COMPANY